Explosion-Proof Mining Transformer for Underground Coal Mines Ex Certified
Our explosion-proof mining transformers are engineered specifically for underground safety in hazardous mining environments. These mining flameproof substations are designed for special and harsh environmental conditions with excellent explosion-proof performance and mechanical strength.
Safety & Performance Features
- 220°C insulation class for high-temperature operation
- Flameproof Group IIB, Zone 1, Zone 2 certification
- Fire-proof construction with non-toxic air creation
- Low noise operation and environmentally protected design
- Maintenance-free operation with heat shock resistance
- Superior overload capacity and multiple protective functions
- Protection against overload, short circuit, leakage, leakage lockout, over-voltage, under-voltage and over temperature
Mining operations involve high risks including methane exposure, coal dust, humidity, vibration and confined spaces. Our Explosion-proof Mine Transformers (Exd I / Exd I Mb) are engineered to ensure reliable and safe power distribution in these hazardous underground environments.
Key Features
- Certified MA & Explosion-Proof (Ex) compliance
- Explosion-proof enclosure with robust mechanical protection
- Resistant to humidity, dust, corrosion and vibration
- High reliability and low maintenance for continuous operation
- Suitable for underground conveyors, pumps, lighting & ventilation systems
- Compact structure for narrow mine shafts; mobile and fixed options available
Applications
Coal mines, underground tunnels, pump stations, mining conveyors, and underground power distribution systems.
Technical Specifications
| Parameter | Specification |
| Transformer Type | Dry type |
| Rated Capacity | Up to 8000kVA |
| Rated Voltage | Up to 11kV |
| Frequency | 50/60Hz |
| Phase | 3 Phase |
| Winding Material | Copper / Aluminum |
| Insulation Class | H(180℃), C (220℃) |
| Vector Group | Dyn11, YNd1d1 |
| Cooling | ANAN, GNAN |
| Protection Enclosure | IP00 to IP54 |
| Explosion-proof Type | ExdIMb |
| Zone | Zone 1, Zone 2 |
| Tank Painting | C4 and C5 on request |
| Altitude | Max 2300m |
| Standard | IEC, AS, EN, IEEE/ANSI, GOST |
HV and LV Switch Configurations
- Mining Flameproof HV vacuum switch + Mining Flameproof LV protection box
- Mining Flameproof HV vacuum switch + Mining Flameproof LV feed switch
- Mining Flameproof HV vacuum switch + Mining Flameproof LV multi-loop combined switch (LMCC)
Contact us for detailed drawings, certificates, and customized technical specifications.
